CN102185358A - Simple and practical movable uninterruptible power supply - Google Patents
- ️Wed Sep 14 2011
CN102185358A - Simple and practical movable uninterruptible power supply - Google Patents
Simple and practical movable uninterruptible power supply Download PDFInfo
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- CN102185358A CN102185358A CN201110135383XA CN201110135383A CN102185358A CN 102185358 A CN102185358 A CN 102185358A CN 201110135383X A CN201110135383X A CN 201110135383XA CN 201110135383 A CN201110135383 A CN 201110135383A CN 102185358 A CN102185358 A CN 102185358A Authority
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- power supply
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- rectification filtering
- filtering module Prior art date
- 2011-05-24 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 239000003990 capacitor Substances 0.000 description 4
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- 239000003381 stabilizer Substances 0.000 description 1
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Abstract
The invention discloses a simple and practical movable uninterruptible power supply, which comprises a rectifier filter module, a pulse-width modulation (PWM)/ over voltage protection (OVP) control module, a main conversion module and an after-flow rectifier filter module, wherein an external mains supply is input to the rectifier filter module, then input to the main conversion module after being rectified by the rectifier filter module, output to the after-flow rectifier filter module after voltage conversion by the main conversion module then and finally output after being rectified by the after-flow rectifier filter module; and the PWM/OVP control module controls the main conversion module to work. The uninterruptible power supply also comprises a stand-by power and a power on and off control module, wherein the after-flow rectifier filter module outputs rectified direct current to the power-on and power-off control module; meanwhile, the stand-by power also outputs the power to the power-on and power-off control module and then supplies the power to a load after the power is output by the power-on and power-off control module. The power supply is switched between the mains power supply mode and the stand-by power supply mode by adopting a relay RLY1 as a hard switch, so that the conversion efficiency of the converter is greatly improved and the power consumption is avoided during the switching.
Description
Technical field
The present invention discloses a kind of uninterrupted power supply, particularly a kind of simple and practical portable uninterrupted power supply.
Background technology
Traditional circuit generally is the pattern that adopts civil power to power, when civil power cuts off the power supply, then can stop immediately powering to the load, because having a power failure is the thing that can't predict, so also can't get ready in earlier stage, often make meetings such as a lot of significant datas, data and do not lose, cause the user to lose because keep in advance.For head it off, it is uninterrupted power supply that the solution of present industry normally adopts traditional vehicle-mounted UPS(), UPS of the prior art is when work, is direct current with the DC(in the stand-by power supply earlier normally by UPS) to be converted to AC(be alternating current), then, once more AC is converted to low voltage DC in UPS inside, and then powering load, the conversion process of secondary can cause overall efficiency to reduce about 20% like this.
Summary of the invention
At the above-mentioned uninterrupted power supply of mentioning of the prior art when using stand-by power supply to power, the shortcoming that the complete machine operating efficiency reduces, the invention provides a kind of new simple and practical portable uninterrupted power supply, it can switch mains-supplied pattern and stand-by power supply powering mode in moment by built-in power on/off control module, thereby load also can normally move in the time of both can having guaranteed the civil power outage, thereby realize the uninterrupted function of output, the user can be prepared in advance, thereby avoid loss, and the power on/off control module directly switches between mains-supplied pattern and stand-by power supply powering mode, improved the conversion efficiency of converter greatly.
The power on/off control module adopts relay R LY1 as hard switching among the present invention, and circuit can energy-producing loss when switching.
The technical scheme that the present invention solves its technical problem employing is: a kind of simple and practical portable uninterrupted power supply, comprise rectification filtering module, the PWM/OVP control module, main transformer die change piece and afterflow rectification filtering module, external civil power input rectifying filtration module, after the rectification filtering module rectification, input to main transformer die change piece, after carrying out voltage transformation, main transformer die change piece exports to the afterflow rectification filtering module, after the rectification of afterflow rectification filtering module, export, the work of PWM/OVP control module control main transformer die change piece, uninterrupted power supply also comprises stand-by power supply and power on/off control module, direct current after the afterflow rectification filtering module output rectification is given the power on/off control module, while stand-by power supply also out-put supply is given the power on/off control module, exports to electric through the power on/off control module.
The technical scheme that the present invention solves its technical problem employing further comprises:
Described uninterrupted power supply also comprises the stand-by power supply charging module, and the direct current after the afterflow rectification filtering module output rectification is given the stand-by power supply charging module, charges to stand-by power supply through the stand-by power supply charging module.
Described uninterrupted power supply also comprises voltage feedback circuit, voltage feedback circuit sampling afterflow rectification filtering module voltage, and feed back to the PWM/OVP control module.
Described power on/off control module comprises triode Q2, relay R LY1, voltage stabilizing didoe ZD1 and resistance R 10, voltage stabilizing didoe ZD1 and resistance R 10 are connected in series, resistance R 10 is connected on the afterflow rectification filtering module output, voltage stabilizing didoe ZD1 ground connection, the base stage of triode Q2 is connected on the common port of voltage stabilizing didoe ZD1 and resistance R 10, afterflow rectification filtering module output is given relay R LY1 power supply by triode Q2, the fixed contact of relay R LY1 is connected on the output, powering load, the output of afterflow rectification filtering module is connected on the normally opened contact of relay R LY1, and the output of stand-by power supply is connected on the normally-closed contact of relay R LY1.
Described afterflow rectification filtering module output is connected on the normally opened contact of relay R LY1 simultaneously.
Described voltage feedback circuit comprises sample resistance R22, and the sample resistance R20 that is connected in series successively, optocoupler U2 and three terminal regulator U3, sample resistance R20 is connected on the input of afterflow rectification filtering module, sample resistance R22 one end is connected on the output of afterflow rectification filtering module, the sample resistance R22 other end is connected on the control end of three terminal regulator U3, and optocoupler U2 exports on the feedback pin of PWM/OVP control module.
Described uninterrupted power supply also comprises lightning protection and overcurrent protection module and EMI filtration module, exports to the EMI filtration module after external civil power process lightning protection and the overcurrent protection module, exports to rectification filtering module after the filtering of EMI filtration module.
The invention has the beneficial effects as follows: the present invention can make ups power moment between mains-supplied pattern and stand-by power supply powering mode switch, load also can normally move in the time of both can having guaranteed the civil power outage, thereby realize the uninterrupted function of output, the user can be prepared in advance, thereby avoid loss, and the power on/off control module adopts relay R LY1 as hard switching, directly between mains-supplied pattern and stand-by power supply powering mode, switch, improved the conversion efficiency of converter greatly, can energy-producing loss when switching.
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a circuit block diagram of the present invention.
Fig. 2 is a main circuit part schematic diagram of the present invention.
Fig. 3 is the complete circuit theory diagrams of the present invention.
Embodiment
Present embodiment is the preferred embodiment for the present invention, and other all its principles are identical with present embodiment or approximate with basic structure, all within protection range of the present invention.
Please referring to accompanying drawing 1 to accompanying drawing 3; mainly comprise rectification filtering module among the present invention; the PWM/OVP control module; main transformer die change piece and afterflow rectification filtering module; in the present embodiment; rectification filtering module adopts rectifier bridge BD1; in the present embodiment; the rectification filtering module prime also is connected with lightning protection and overcurrent protection module and EMI filtration module; lightning protection and overcurrent protection module mainly comprise protective tube F1 and the thermistor NTC1 that is connected on the civil power input live wire; export to the EMI filtration module after external civil power process lightning protection and the overcurrent protection module; in the present embodiment; the EMI filtration module is mainly the capacitor C X1 that is connected across between zero line and the live wire, exports to rectification filtering module after the filtering of EMI filtration module.External civil power inputs to the EMI filtration module after lightning protection and overcurrent protection module; input rectifying filtration module after the EMI filtration module carries out EMI filtering; after rectification filtering module is with the AC rectification direct current, input to main transformer die change piece; after carrying out voltage transformation, main transformer die change piece exports to the afterflow rectification filtering module; in the present embodiment; main transformer die change piece adopts transformer T1; the work of PWM/OVP control module control main transformer die change piece; in the present embodiment; the PWM/OVP control module mainly adopts PWM chip U1; PWM chip U1 driving switch pipe Q1; by the break-make of switching tube Q1 control rectification filtering module out-put supply in main transformer die change piece, thus the work of control main transformer die change piece.Main transformer die change piece carries out exporting to the afterflow rectification filtering module behind the voltage transformation, after being rectified into direct current, exports the afterflow rectification filtering module, in the present embodiment, the afterflow rectification filtering module adopts diode D7, capacitor C 8, capacitor C 9, inductance L 2 and capacitor C 10 etc. to form " π " type current rectifying and wave filtering circuit.In the present embodiment, also comprise stand-by power supply and power on/off control module, stand-by power supply adopts storage battery, in the present embodiment, direct current after the afterflow rectification filtering module output rectification is given the power on/off control module, while stand-by power supply also out-put supply is given the power on/off control module, exports to electric through the power on/off control module.In the present embodiment, the power on/off control module comprises triode Q2, relay R LY1, voltage stabilizing didoe ZD1 and resistance R 10, voltage stabilizing didoe ZD1 and resistance R 10 are connected in series, resistance R 10 is connected on the afterflow rectification filtering module output V+, voltage stabilizing didoe ZD1 ground connection, the base stage of triode Q2 is connected on the common port of voltage stabilizing didoe ZD1 and resistance R 10, afterflow rectification filtering module output V+ gives relay R LY1 power supply by triode Q2, the fixed contact of relay R LY1 is connected on the output, powering load, the output of afterflow rectification filtering module is connected on the normally opened contact of relay R LY1, and the output of stand-by power supply is connected on the normally-closed contact of relay R LY1.In the present embodiment, afterflow rectification filtering module output V+ is connected on the normally-closed contact of relay R LY1 simultaneously.In the present embodiment, uninterrupted power supply also comprises the stand-by power supply charging module, the power source charges module adopts diode D1, afterflow rectification filtering module output V+ charges to stand-by power supply through diode D1, direct current after the rectification is given the stand-by power supply charging module, charges to stand-by power supply through the stand-by power supply charging module.
In the present embodiment, uninterrupted power supply also comprises voltage feedback circuit, voltage feedback circuit sampling afterflow rectification filtering module voltage, and feed back to the PWM/OVP control module.In the present embodiment, voltage feedback circuit comprises sample resistance R22, and the sample resistance R20 that is connected in series successively, optocoupler U2 and three terminal regulator U3, sample resistance R20 is connected on the input of afterflow rectification filtering module, sample resistance R22 one end is connected on the output of afterflow rectification filtering module, the sample resistance R22 other end is connected on the control end of three terminal regulator U3, and optocoupler U2 exports on the feedback pin of PWM/OVP control module.
The present invention is divided into two kinds of mains-supplied pattern and stand-by power supply powering modes in use:
1, mains-supplied pattern: when the civil power normal power supply, by the power on/off control module stand-by power supply is quit work, adopt the voltage of civil power after conversion to export to load (being terminal equipment), and by the stand-by power supply charging module stand-by power supply is charged simultaneously;
2, stand-by power supply powering mode: when civil power is stopped power supply or when terminal equipment uses on outdoor and automobile, this moment is because the no civil power environment of periphery, then circuit automatically switches to stand-by power supply (being storage battery) by the power on/off control module and exports to load (being terminal equipment), reverts to the mains-supplied pattern when civil power is normally imported automatically.
In the present embodiment, the 2nd pin of relay R LY1 is a fixed contact, and the 4th pin is a normally opened contact, and the 5th pin is a normally-closed contact.The 1st pin and the 3rd pin are the power supply coil of relay R LY1, and during use, the 2nd pin of relay R LY1 links to each other with OUT+, and OUT+ is voltage output end, connecting terminal equipment (being load); The 5th pin of relay R LY1 links to each other with the positive pole of stand-by power supply (being storage battery), OUT-is mains-supplied pattern and the public negative terminal of stand-by power supply powering mode, and connecting terminal equipment (being load) formation current supply circuit, the 4th pin of relay R LY1 is connected with afterflow rectification filtering module output V+.During work, afterflow rectification filtering module output V+ voltage provides stable voltage for triode Q2 base stage by resistance R 10 and voltage-stabiliser tube ZD1, make triode Q2 conducting, afterflow rectification filtering module output V+ powers to the 1-3 pin of relay R LY1 by triode Q2, for it provides constant 5V operating voltage, actuating of relay this moment RLY1, the 2nd pin and the 4th pin are connected, enter the mains-supplied pattern, directly export to OUT+ by afterflow rectification filtering module output V+ and provide energy for terminal equipment, meanwhile, afterflow rectification filtering module output V+ voltage also passes through the diode D1 of charging module to the stand-by power supply charge in batteries.When civil power is stopped power supply or when terminal equipment uses on outdoor and automobile, this moment is because the no civil power environment of periphery, transformer T1 quits work, afterflow rectification filtering module output V+ no-output, triode Q2 ends because of no operating voltage, this moment, relay R LY1 stopped action because of no supply power voltage, at this moment, the 2nd pin and the 5th pin are connected, switch to the stand-by power supply powering mode, export to OUT+ by storage battery and provide energy for terminal equipment, this moment, charging module stopped the stand-by power supply charge in batteries, and the capacity of storage battery can influence the operating time of terminal equipment under the stand-by power supply powering mode.When the normal power supply of city power recovery, circuit prior selects to enter the mains-supplied pattern, so circulation.
The present invention can make terminal equipment moment between mains-supplied pattern and stand-by power supply powering mode switch, load also can normally move in the time of both can having guaranteed the civil power outage, thereby realize the uninterrupted function of output, the user can be prepared in advance, thereby avoid loss, and the power on/off control module adopts relay R LY1 as hard switching, directly between mains-supplied pattern and stand-by power supply powering mode, switch, improved the conversion efficiency of converter greatly, can energy-producing loss when switching.
Claims (7)
1. simple and practical portable uninterrupted power supply, comprise rectification filtering module, the PWM/OVP control module, main transformer die change piece and afterflow rectification filtering module, external civil power input rectifying filtration module, after the rectification filtering module rectification, input to main transformer die change piece, after carrying out voltage transformation, main transformer die change piece exports to the afterflow rectification filtering module, after the rectification of afterflow rectification filtering module, export, the work of PWM/OVP control module control main transformer die change piece, it is characterized in that: described uninterrupted power supply also comprises stand-by power supply and power on/off control module, direct current after the afterflow rectification filtering module output rectification is given the power on/off control module, while stand-by power supply also out-put supply is given the power on/off control module, exports to electric through the power on/off control module.
2. simple and practical portable uninterrupted power supply according to claim 1, it is characterized in that: described uninterrupted power supply also comprises the stand-by power supply charging module, direct current after the afterflow rectification filtering module output rectification charges to stand-by power supply through the stand-by power supply charging module by the power source charges module.
3. simple and practical portable uninterrupted power supply according to claim 1, it is characterized in that: described uninterrupted power supply also comprises voltage feedback circuit, d. c. voltage signal after the voltage feedback circuit sampling afterflow rectification filtering module, and feed back to the PWM/OVP control module.
4. simple and practical portable uninterrupted power supply according to claim 2, it is characterized in that: described power on/off control module comprises triode Q2, relay R LY1, voltage stabilizing didoe ZD1 and resistance R 10, voltage stabilizing didoe ZD1 and resistance R 10 are connected in series, resistance R 10 is connected on the afterflow rectification filtering module output, voltage stabilizing didoe ZD1 ground connection, the base stage of triode Q2 is connected on the common port of voltage stabilizing didoe ZD1 and resistance R 10, afterflow rectification filtering module output is given relay R LY1 power supply by triode Q2, the fixed contact of relay R LY1 is connected on the output, powering load, the output of afterflow rectification filtering module is connected on the normally opened contact of relay R LY1, and the output of stand-by power supply is connected on the normally-closed contact of relay R LY1.
5. when two kinds of voltages exist simultaneously, preferentially select mains-supplied
Simple and practical portable uninterrupted power supply according to claim 4 is characterized in that: described afterflow rectification filtering module output is connected on the normally opened contact of relay R LY1 simultaneously.
6. simple and practical portable uninterrupted power supply according to claim 3, it is characterized in that: described voltage feedback circuit comprises sample resistance R22, and the sample resistance R20 that is connected in series successively, optocoupler U2 and three terminal regulator U3, sample resistance R20 is connected on the input of afterflow rectification filtering module, sample resistance R22 one end is connected on the output of afterflow rectification filtering module, the sample resistance R22 other end is connected on the control end of three terminal regulator U3, and optocoupler U2 exports on the feedback pin of PWM/OVP control module.
7. according to any described simple and practical portable uninterrupted power supply in the claim 1 to 6; it is characterized in that: described uninterrupted power supply also comprises lightning protection and overcurrent protection module and EMI filtration module; export to the EMI filtration module after external civil power process lightning protection and the overcurrent protection module, after the filtering of EMI filtration module, export to rectification filtering module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110135383XA CN102185358A (en) | 2011-05-24 | 2011-05-24 | Simple and practical movable uninterruptible power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110135383XA CN102185358A (en) | 2011-05-24 | 2011-05-24 | Simple and practical movable uninterruptible power supply |
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| CN102185358A true CN102185358A (en) | 2011-09-14 |
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| CN201110135383XA Pending CN102185358A (en) | 2011-05-24 | 2011-05-24 | Simple and practical movable uninterruptible power supply |
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Cited By (5)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102938580A (en) * | 2012-11-27 | 2013-02-20 | 宁夏电力公司信息通信分公司 | Portable multifunctional power supply for emergency repair |
| CN107546838A (en) * | 2016-06-23 | 2018-01-05 | 中兴通讯股份有限公司 | Power circuit, power up control circuit and method |
| CN107749664A (en) * | 2017-11-15 | 2018-03-02 | 安徽南瑞中天电力电子有限公司 | A kind of design circuit of acquisition system emergency power supply |
| CN108382248A (en) * | 2018-03-27 | 2018-08-10 | 新日(无锡)发展有限公司 | A kind of battery management system based on bq77910 controller new-energy automobiles |
| CN109638955A (en) * | 2018-12-27 | 2019-04-16 | 久和新科技（深圳）有限公司 | A kind of power supply circuit |
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| 2012-06-06 | SE01 | Entry into force of request for substantive examination | |
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Application publication date: 20110914 |